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An Industrial psychologist administered personality inventory test for passive-aggressive traits to 150 employees. Individuals were rated on a score from 1 to 5, where 1 was extremely passive and 5 extremely aggressive. A score of 3 indicated neither trait Construct a probability distribution for the random variable x. Then graph the distribution using a histogram. Calculate the mean and standard deviation.
If random sample of thirty six customer transactions points out that sample mean withdrawal amount is $172, is there evidence to think that population mean withdrawal amount is no longer $160? Determine the mean of data above?
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
Answer the following three questions based on what you know about statistics now.
Find the value of the standard normal random variable z, called z 0 such that:
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Perform a hypothesis test by using.04 level of significance to find out if there is a difference between the population means.
Assuming that the Poisson distribution is a plausible model in describing variability of asbestos fiber counts in filters; derive a 95% confidence interval indicating the variability in the average number in asbestos fibers.
The Price-to-Earnings ratio (P/E) of a publicly listed profit-making company is defined as the ratio of the stock price of the company to the earnings per share.
If one person is selected at random, what is the probability that person is Female?
Carry out the global test of hypothesis to find out whether any of the regression coefficients are not equal to 0. Use.05 level of significance.
What is the probability that the sum of their scores exceeds 1200 and probability that the average of the scores of all 400 student
What is the probability that no more than two of the three are commercial successes?
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